Positioning device and method for centering net rack rod piece and hollow ball

Abstract

The invention relates to the technical field of net rack structures, in particular to a positioning device and method for centering a net rack rod piece and a hollow ball. The placing frame can slide in the length direction of the mounting base; the positioning groove is formed in the top of the placing frame, the height of the positioning groove can be adjusted, a groove opening faces upwards, and the two side walls incline upwards and are symmetrically arranged; the centering clamp is mounted on the mounting base, is positioned outside one end of the placement frame and is provided with a positioning taper hole, the axis of the positioning taper hole is parallel to the length direction of the positioning groove, the positioning taper hole is used for accommodating a hollow ball, and the small-diameter end of the positioning taper hole directly faces the placement frame; the positioning connecting rod assembly is provided with an alignment rod, the net rack rod piece can be clamped in the positioning groove, the alignment rod and the net rack rod piece are coaxial after the net rack rod piece is clamped, and the alignment rod can be inserted into the positioning taper hole; the coaxiality of the net rack rod piece and the hollow ball can be improved. The positioning method is based on the positioning device.

Description

Technical Field

[0001] This invention relates to the field of space frame structure technology, and specifically to a positioning device and method for aligning space frame members with hollow spheres. Background Technology

[0002] With the development of the construction industry, large-volume steel structure roofs are widely used in various buildings, realizing column-free, ultra-large interior spaces. Steel space frame structures have advantages such as adaptability to large spans, light structural weight, full utilization of high-strength materials, material saving, high degree of prefabrication, fast construction speed, and environmental friendliness, making them widely used in large-span spatial structures. There are many types of existing space frame nodes, and exposed space frame structures often use bolted ball nodes and welded hollow ball nodes, which have better visual appeal. These two types of nodes are currently the most widely used nodes in domestic spatial structures. However, bolted ball nodes have complex component processing, are expensive, and are prone to bolt over-tightening or under-tightening. Furthermore, bolted ball nodes have relatively weak bending stiffness and torsional resistance.

[0003] Welding hollow sphere nodes on-site is quite challenging. It requires aligning, abutting, and stabilizing the weld joint between the space frame member and the hollow sphere before welding. However, in space frame structures, deviations in geometric dimensions and surface curvature significantly impact the internal forces, overall stability, and construction accuracy of the space frame. Positioning the hollow sphere and space frame members is a crucial foundational step in the construction process, especially for large-span spatial space frame structures, directly affecting the installation accuracy and closure of the space frame.

[0004] In the construction of traditional metal sphere space frame structures, the position of the center of the metal sphere is often determined by manual visual inspection and laser positioning, and then a total station is used for measurement and positioning. This method is quite arbitrary, and the cumulative installation error generated in complex structures (especially irregular structures) cannot be ignored. This results in a large difference between the stress of the entire space frame structure and the design, which may pose structural safety and engineering quality risks. Summary of the Invention

[0005] To address the technical problem of large positioning errors during welding of space frame members and hollow spheres in existing space frame structures, this invention provides a positioning device and method for aligning space frame members and hollow spheres. This device can quickly determine the center position of the hollow sphere and place the space frame member on the extended diameter line of the hollow sphere, ensuring sufficient coaxiality between the welding of the space frame member and the hollow sphere. This improves the coaxiality of the space frame member and the hollow sphere, ensuring the structural safety and engineering quality of the space frame.

[0006] This invention is achieved through the following technical solution:

[0007] In a first aspect, the present invention provides a positioning device for aligning space frame members with hollow spheres, comprising: a mounting base; a placement frame slidably mounted on the mounting base and capable of sliding along the length direction of the mounting base; a positioning groove mounted on the top of the placement frame, extending along the length direction of the placement frame, with an adjustable height, and the groove opening facing upwards, and the two side walls inclined upwards and symmetrically arranged, for accommodating space frame members; and a centering clamp mounted on the mounting base, located outside one end of the placement frame, and provided with a positioning conical hole, the axis of which is... The positioning cone hole is arranged parallel to the length direction of the positioning groove and is used to accommodate the hollow ball. The small diameter end of the positioning cone hole faces the placement frame. The positioning link assembly is provided with an alignment rod, which can clamp the space frame member in the positioning groove. After clamping the space frame member, the alignment rod is coaxial with the space frame member and can be inserted into the positioning cone hole. In the state where the hollow ball is clamped in the positioning cone hole, at least part of it can protrude from the small diameter end of the positioning cone hole. After the alignment rod is inserted into the positioning cone hole, it is coaxial with the positioning cone hole.

[0008] The positioning device for aligning space frame members with hollow spheres provided by the present invention includes a mounting base, a placement frame, a positioning groove, a centering clamp, and a positioning link assembly. The placement frame is slidably mounted on the mounting base. The positioning groove is mounted on the top of the placement frame, its height is adjustable, and its two side walls are inclined upwards and symmetrically arranged. The centering clamp is located outside one end of the placement frame and is provided with a positioning cone hole. The axis of the positioning cone hole is parallel to the length direction of the positioning groove, and its small diameter end faces the placement frame. The positioning link assembly is provided with an alignment rod that can be inserted into the positioning cone hole, and the alignment rod is coaxial with the space frame member after clamping the space frame member.

[0009] Therefore, when the space frame members are placed parallel to each other in the positioning groove, the positioning effect of the symmetrically inclined side walls of the positioning groove ensures that the axis of the space frame members is located on the symmetrical plane of the positioning groove and parallel to the axis of the positioning cone hole. Then, the positioning rod assembly clamps the space frame members in the positioning groove, making the alignment rod coaxial with the space frame members. Next, the placement frame is pushed towards the centering fixture, causing the alignment rod to insert into the positioning cone hole. Through the cooperation between the positioning cone hole and the alignment rod, the alignment rod and the positioning cone hole become coaxial. At this point, the space frame members and the positioning cone hole are coaxial. Thus, by fixing the height of the positioning groove frame, the space frame members and the positioning cone hole remain coaxial. The height of the positioning frame is adjusted so that the placement frame moves away from the centering fixture, causing the alignment rod to move out of the positioning cone hole and releasing the clamping of the positioning link assembly. This allows the end of the space frame member to be directly aligned with the positioning cone hole. The hollow ball is then clamped in the centering fixture to accommodate the hollow ball through the positioning cone hole. Since the positioning cone hole is conical, the center of the hollow ball can be located on the center line of the positioning cone hole, allowing for quick marking of the hollow ball's center position. The space frame member is coaxial with the positioning cone hole. Therefore, during welding, the placement frame is moved so that the end of the space frame member abuts against the part of the hollow ball protruding from the positioning cone hole, allowing for welding.

[0010] In summary, the positioning device for aligning space frame members and hollow spheres provided by this invention can quickly determine the center position of the hollow sphere and place the space frame member on the diameter extension line of the hollow sphere, so that the space frame member and the hollow sphere have sufficient coaxiality during welding, thereby improving the coaxiality between the space frame member and the hollow sphere and ensuring the structural safety and engineering quality of the space frame.

[0011] In an optional embodiment of this application, the mounting base is provided with a movable slide rail that extends along the length of the mounting base; the bottom of the placement frame is provided with a connecting slide block that is slidably engaged with the movable slide rail to ensure that the placement frame can slide stably along the length of the mounting base and to prevent the placement frame from deviating during movement.

[0012] In an optional embodiment of this application, at least one vertically arranged connecting slide rod is connected to the bottom of the positioning groove, and the lower end of the connecting slide rod is slidably inserted into the connecting slide block; the connecting slide block is provided with a locking component, which can lock the connecting slide rod in the connecting slide block to ensure that the positioning groove can slide stably up and down relative to the placement frame and prevent the positioning groove from tilting during the sliding process.

[0013] In an optional embodiment of this application, the locking assembly includes: a locking screw, screwed to the connecting slide, one end of which can extend into the mounting hole of the connecting slide accommodating the connecting slide rod; and a locking handle, one end of which is fixedly connected to the other end of the locking screw; wherein the locking handle drives the locking screw to rotate, thereby driving the end of the locking screw to abut against the connecting slide rod, facilitating manual locking of the positioning groove to ensure the height position accuracy of the space frame members in the positioning groove.

[0014] In an optional embodiment of this application, the centering fixture includes: a positioning plate, vertically fixed on the mounting base, with the positioning cone hole disposed on the positioning plate; a limiting push plate, vertically mounted on the mounting base, positioned opposite the large-diameter end of the positioning cone hole, and movable along the length direction of the mounting base; and a first linear actuator, mounted on the mounting base and connected to the limiting push plate in a driving connection. When the first linear actuator pushes the limiting push plate towards the positioning plate, the limiting push plate can press the hollow ball against the positioning cone hole, ensuring that the sidewall of the hollow ball is flush against the side of the positioning cone hole, thereby ensuring that the hollow ball and the positioning cone hole are coaxial.

[0015] In an optional embodiment of this application, a first ejection groove is provided on the top of the positioning plate. The first ejection groove is connected to the positioning cone hole and allows the space frame members to pass through, so that the space frame members can be quickly removed from the centering fixture after being welded to the hollow sphere.

[0016] In an optional embodiment of this application, the positioning link assembly includes: a connecting slide; a first link, one end of which is hinged to the bottom of the positioning groove and abuts against the space frame member, and the other end of which is hinged to the connecting slide; a second link, one end of which is hinged to the connecting slide; a clamping block, hinged to the other end of the second link; a third link, one end of which is hinged to the middle of the first link; and a fourth link, one end of which is hinged to the middle of the second link and the other end of which is hinged to the other end of the third link; wherein, the middle part of the alignment rod is slidably connected to the connecting slide, and one end is hinged to the end of the third link away from the first link. The first link, the second link, the third link, and the fourth link constitute a parallelogram linkage mechanism and are coplanar with the symmetrical planes of the two side walls of the positioning groove. In the clamping state, the first link and the second link are symmetrical about the axis of the space frame member to ensure that the alignment rod is coaxial with the space frame member when the positioning link clamps the space frame member.

[0017] In an optional embodiment of this application, the clamping block and the positioning groove are connected by bolts to facilitate the rapid clamping and release of the positioning linkage assembly.

[0018] In an optional embodiment of this application, a docking fixture is further included. The docking fixture includes: a docking base, mounted on the mounting base, with a variable position along the length of the mounting base; a docking plate, vertically fixed on the docking base, located on the side of the placement frame away from the centering fixture, and provided with a docking conical hole and a second ejection groove. The docking conical hole is used to accommodate hollow balls and is coaxial with the positioning conical hole. The small-diameter end of the docking conical hole faces the placement frame. The second ejection groove communicates with the docking conical hole and allows space frame members to pass through; a docking push plate, vertically mounted on the docking base, positioned facing the large-diameter end of the docking conical hole, and movable along the length of the docking base; and a second linear actuator, mounted on the docking base and drivenly connected to the docking push plate. When the second linear actuator pushes the docking push plate towards the docking plate, the hollow ball can be pressed against the docking conical hole by the docking push plate, thereby positioning the hollow ball by the docking fixture, making the hollow ball coaxial with the space frame member, and thus achieving rapid connection of the two hollow balls.

[0019] Secondly, the present invention provides a method for aligning space frame members with hollow spheres, based on the aforementioned positioning device for aligning space frame members with hollow spheres, comprising the following steps:

[0020] S10. Place the space frame member in the positioning groove so that the axis of the space frame member is located on the center line of the positioning groove;

[0021] S20. The space frame members are clamped in the positioning groove by the positioning link assembly, so that the alignment rod is coaxial with the space frame members;

[0022] S30. Move the placement frame to the centering fixture and insert the alignment rod into the positioning cone hole so that the alignment rod is coaxial with the positioning cone hole;

[0023] S40. Move the placement frame back, and after moving the alignment rod out of the positioning cone hole, release the clamping of the positioning link assembly;

[0024] S50. Place the hollow ball into the centering fixture, so that the hollow ball at least partially protrudes from the small-diameter end of the positioning cone hole.

[0025] The method for aligning space frame members and hollow spheres provided by this invention is based on the aforementioned positioning device for aligning space frame members and hollow spheres. First, the space frame member is placed in a positioning groove, ensuring its axis is on the centerline of the groove. Then, the space frame member is clamped in the positioning groove by a positioning linkage assembly, making the alignment rod coaxial with the space frame member. Next, the placement frame is moved towards the centering fixture, inserting the alignment rod into the positioning cone hole, ensuring it is coaxial with the hole. After the placement frame is moved back and the alignment rod is removed from the positioning cone hole, the clamping of the positioning linkage assembly is released. Finally, the hollow sphere is placed into the centering fixture, ensuring that at least part of the hollow sphere protrudes from the small-diameter end of the positioning cone hole. This allows for rapid determination of the hollow sphere's center position, and the space frame member is placed on the diameter extension line of the hollow sphere. This ensures sufficient coaxiality between the space frame member and the hollow sphere during welding, thereby improving the coaxiality of the space frame member and ensuring the structural safety and engineering quality of the space frame.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] 1. The positioning device for aligning space frame members and hollow spheres provided by the present invention includes a mounting base, a placement frame, a positioning groove, a centering clamp, and a positioning link assembly. The placement frame is slidably mounted on the mounting base. The positioning groove is mounted on the top of the placement frame, its height is adjustable, and its two side walls are inclined upwards and symmetrically arranged. The centering clamp is located outside one end of the placement frame and has a positioning cone hole. The axis of the positioning cone hole is parallel to the length direction of the positioning groove, and its small diameter end faces the placement frame. The positioning link assembly has an alignment rod that can be inserted into the positioning cone hole. After clamping the space frame member, the alignment rod is coaxial with the space frame member. Through the positioning effect of the symmetrically inclined two side walls of the positioning groove, the space frame member is aligned... The axis is located on the symmetrical plane of the positioning groove and parallel to the axis of the positioning cone hole. The space frame members are clamped in the positioning groove by the positioning connecting rod assembly. The positioning cone hole and the alignment rod cooperate to make the alignment rod and the positioning cone hole coaxial. By fixing the height of the positioning groove frame, the space frame members and the positioning cone hole are kept coaxial. The hollow sphere is accommodated by the positioning cone hole so that the center of the hollow sphere is located on the center line of the positioning cone hole, thereby quickly calibrating the position of the center of the hollow sphere. The space frame members are placed on the extension line of the diameter of the hollow sphere so that the welding of the space frame members and the hollow sphere has sufficient coaxiality, thereby improving the coaxiality of the space frame members and the hollow sphere, and ensuring the structural safety and engineering quality of the space frame.

[0028] 2. The method for aligning space frame members and hollow spheres provided by this invention, based on the aforementioned positioning device for aligning space frame members and hollow spheres, first places the space frame member in the positioning groove, ensuring the axis of the space frame member is located on the centerline of the positioning groove. Then, the space frame member is clamped in the positioning groove by the positioning linkage assembly, making the alignment rod coaxial with the space frame member. Next, the placement frame is moved towards the centering fixture, and the alignment rod is inserted into the positioning cone hole, making the alignment rod coaxial with the positioning cone hole. After the placement frame is moved back and the alignment rod is removed from the positioning cone hole, the clamping of the positioning linkage assembly is released. Finally, the hollow sphere is placed into the centering fixture, ensuring that at least part of the hollow sphere protrudes from the small-diameter end of the positioning cone hole. This allows for quick determination of the center position of the hollow sphere, and the space frame member is placed on the diameter extension line of the hollow sphere, ensuring sufficient coaxiality between the space frame member and the hollow sphere during welding. This improves the coaxiality between the space frame member and the hollow sphere, ensuring the structural safety and engineering quality of the space frame. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the positioning device for aligning space frame members and hollow spheres according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified structural diagram of part A;

[0033] Figure 3 This is a schematic diagram of the centering fixture provided in an embodiment of the present invention;

[0034] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part B;

[0035] Figure 5 This is a schematic diagram of the docking fixture provided in an embodiment of the present invention.

[0036] The attached figures include reference numerals and their corresponding component names:

[0037] 10-Mounting base; 11-Moving slide rail;

[0038] 20-Placement rack, 21-Connecting slide, 22-Locking screw, 23-Locking handle;

[0039] 30 - Positioning groove, 31 - Connecting slide bar;

[0040] 40-Centering fixture, 41-Positioning plate, 41a-Positioning cone hole, 41b-First ejector groove, 42-Limiting push plate, 43-First linear actuator;

[0041] 50-Positioning link assembly, 51-Alignment rod, 51a-Alignment cone, 52-Connecting slide, 53-First link, 54-Second link, 55-Third link, 56-Fourth link, 57-Clamping block;

[0042] 60-Dating fixture, 61-Dating base, 62-Dating plate, 62a-Dating cone hole, 62b-Second ejector groove, 63-Dating push plate, 64-Second linear actuator. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0045] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0047] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] Example 1

[0049] Combination Figure 1 This embodiment provides a positioning device for aligning space frame members with hollow spheres, comprising: a mounting base 10; a placement frame 20, slidably mounted on the mounting base 10 and capable of sliding along the length of the mounting base 10; a positioning groove 30, mounted on the top of the placement frame 20, extending along the length of the placement frame 20, with an adjustable height, and the groove opening facing upwards, with both side walls inclined upwards and symmetrically arranged, for accommodating space frame members; and a centering clamp 40, mounted on the mounting base 10, located outside one end of the placement frame 20, and provided with a positioning conical hole 41a, the axis of which is aligned with the positioning groove 30. The 0 is arranged parallel to the length direction. The positioning cone hole 41a is used to accommodate the hollow ball, and the small diameter end of the positioning cone hole 41a is directly opposite the placement frame 20. The positioning connecting rod assembly 50 is provided with an alignment rod 51, which can clamp the space frame rod in the positioning groove 30. After clamping the space frame rod, the alignment rod 51 is coaxial with the space frame rod, and the alignment rod 51 can be inserted into the positioning cone hole 41a. In the state where the hollow ball is clamped in the positioning cone hole 41a, at least part of it can protrude from the small diameter end of the positioning cone hole 41a. After the alignment rod 51 is inserted into the positioning cone hole 41a, it is coaxial with the positioning cone hole 41a.

[0050] Specifically, the mounting base 10 is typically an assembled structure (a concrete base on which corresponding connecting components are installed) to save on manufacturing costs. A movable slide rail 11 is provided on the mounting base 10, extending along the length of the mounting base 10. Its cross-section is typically an inverted trapezoidal structure, larger at the top and smaller at the bottom, or a structure composed of an arc-shaped cross-section on the upper side and a smaller cross-section on the lower side. The length direction of the movable slide rail 11, the symmetry plane of the positioning groove 30 wall, and the axis of the positioning cone hole 41a are coplanar, and the plane containing the axes of the movable slide rail 11 and the positioning cone hole 41a is perpendicular to the mounting base 10. A connecting slide block 21 is provided at the bottom of the placement frame 20, which slidably engages with the movable slide rail 11 to ensure that the placement frame 20 can slide stably along the length direction of the mounting base 10, preventing the placement frame 20 from deviating during movement. Furthermore, during the movement of the placement frame 20, the symmetry plane of the positioning groove 30 remains coplanar with the axis of the positioning cone hole 41a. Meanwhile, the end of the alignment rod 51 facing the positioning cone hole 41a is also a cone-shaped structure (in this embodiment, an alignment cone head 51a is provided) so that the alignment rod 51 can be quickly inserted into the positioning cone hole 41a.

[0051] Combination Figure 2 Regarding the adjustable height of the positioning groove 30, in this embodiment, at least one vertically arranged connecting slide rod 31 is connected to the bottom of the positioning groove 30 (if only one connecting slide rod 31 is provided, a corresponding guide rod needs to be provided to ensure that the two groove walls of the positioning groove 30 remain coplanar with the positioning cone hole 41a during the up-and-down sliding process; generally, two connecting slide rods 31 are provided). The lower end of the connecting slide rod 31 is slidably inserted into the connecting slide block 21; the connecting slide block 21 is provided with a locking component, which can lock the connecting slide rod 31 in the connecting slide block 21 to ensure that the positioning groove 30 can slide stably up and down relative to the placement frame 20, and to prevent the positioning groove 30 from tilting during the sliding process. Generally, a linear bearing is installed on the placement frame 20, and the middle part of the connecting slide rod 31 is inserted into the linear bearing to ensure that the connecting slide rod 31 can slide stably up and down while preventing it from tilting during the sliding process.

[0052] Specifically, the locking assembly includes: a locking screw 22, which is screwed to the connecting slide 21, with one end extending into the mounting hole of the connecting slide 21 that accommodates the connecting slide rod 31; and a locking handle 23, one end of which is fixedly connected to the other end of the locking screw 22. The locking handle 23 drives the locking screw 22 to rotate, thereby driving the end of the locking screw 22 to abut against the connecting slide rod 31, facilitating manual locking of the positioning groove 30 to ensure the height and position accuracy of the space frame members within the positioning groove 30.

[0053] Combination Figure 3 The centering fixture 40 includes: a positioning plate 41, vertically fixed on the mounting base 10, with the positioning cone hole 41a disposed on the positioning plate 41; a limiting push plate 42, vertically mounted on the mounting base 10, positioned opposite the large-diameter end of the positioning cone hole 41a, and movable along the length direction of the mounting base 10; and a first linear actuator 43, mounted on the mounting base 10 and connected to the limiting push plate 42. When the first linear actuator 43 pushes the limiting push plate 42 toward the positioning plate 41, the limiting push plate 42 can press the hollow ball into the positioning cone hole 41a, so that the sidewall of the hollow ball can be tightly against the side of the positioning cone hole 41a, thereby ensuring that the hollow ball and the positioning cone hole 41a are coaxial.

[0054] It is understandable that the lower end of the limit push plate 42 is slidably mounted on the moving slide rail 11 to ensure the stability of the limit push plate 42 when it moves. The first linear actuator 43 can be a linear actuator such as an electric actuator or a cylinder, or a screw-slider mechanism or a gear and rack mechanism driven by a motor.

[0055] The positioning plate 41 is provided with a first ejection groove 41b at its top. The first ejection groove 41b is connected to the positioning cone hole 41a, allowing the space frame rod to pass through. After the space frame rod is welded to the hollow ball, the first linear actuator 43 moves back a short distance, causing the hollow ball to move out of the positioning cone hole 41a. Then, the connecting part between the hollow ball and the space frame rod can be removed from the positioning device, thereby enabling the welded component to be quickly removed from the centering fixture 40.

[0056] Combination Figure 4The positioning link assembly 50 includes: a connecting slide 21; a first link 53, one end of which is hinged to the bottom of the positioning groove 30, and the other end of which is hinged to the connecting slide 21; a second link 54, one end of which is hinged to the connecting slide 21; a clamping block 57, hinged to the other end of the second link 54; a third link 55, one end of which is hinged to the middle of the first link 53; and a fourth link 56, one end of which is hinged to the middle of the second link 54, and the other end of which is hinged to the other end of the third link 55; wherein, the middle part of the alignment rod 51 is slidably connected to the connecting slide 21, and one end is connected to... The end of the third link 55 furthest from the first link 53 is hinged. The first link 53, the second link 54, the third link 55, and the fourth link 56 form a parallelogram linkage mechanism and are coplanar with the symmetrical planes of the two side walls of the positioning groove 30. In the clamping state, the first link 53 and the second link 54 are symmetrical about the axis of the space frame member (the distance from the center of the hinge point of the first link 53 to the side wall of the lower end of the space frame member is equal to the distance from the center of the hinge point of the second link 54 and the clamping block 57 to the side wall of the upper end of the space frame member).

[0057] Therefore, during the operation of the positioning link assembly 50, it remains horizontal and positioned at the centerline between the lower side of the clamping block 57 and the lower side of the space frame member, ensuring that the alignment rod 51 is coaxial with the space frame member when the positioning link clamps the space frame member. In standby and unclamped states, the positioning link assembly 50 is suspended below the positioning groove 30 under its own weight, without obstructing the ends of the space frame member. To reduce the weight of the alignment rod 51 and the resistance during its movement, a shell-mounted conical alignment cone 51a is fixed to its end using polytetrafluoroethylene plastic.

[0058] The clamping block 57 is bolted to the positioning groove 30 to facilitate rapid clamping and release of the positioning link assembly 50. This also ensures the stability of the clamping state of the positioning link assembly 50, preventing the space frame members from moving relative to the positioning groove 30 during the movement of the placement frame 20.

[0059] Based on this, combined Figure 1 and Figure 5This embodiment also includes a docking fixture 60, which includes: a docking base 61, mounted on the mounting base 10, with a variable position along the length of the mounting base 10; and a docking plate 62, vertically fixed on the docking base 61, located on the side of the placement frame 20 away from the centering fixture 40, and provided with a docking conical hole 62a and a second ejection groove 62b. The docking conical hole 62a is used to accommodate a hollow sphere and is coaxial with the positioning conical hole 41a. The small-diameter end of the docking conical hole 62a faces the placement frame 20. The second ejection groove 62b communicates with the docking conical hole 62a and allows space frame members to pass through. A docking pusher plate 63 is vertically mounted on the docking base 61, facing the large-diameter end of the docking cone hole 62a, and is movable along the length of the docking base 61. A second linear actuator 64 is mounted on the docking base 61 and is connected to the docking pusher plate 63. When the second linear actuator pushes the docking pusher plate 63 to move towards the docking plate 62, the hollow ball can be pressed into the docking cone hole 62a by the docking pusher plate 63, so that the lower hollow ball can be positioned by the docking clamp 60, making the lower hollow ball coaxial with the space frame member, thereby realizing the rapid connection of the two hollow balls.

[0060] It should be noted that the docking base 61 is slidably mounted on the moving slide rail 11, and a locking mechanism, such as a magnetic seat or locking bolt, is provided on the docking base 61 to lock the docking base 61 in the corresponding position on the installation when the docking clamp 60 needs to be locked. The docking push plate 63 is slidably connected to the docking base 61 through a sliding connection structure, so that the second linear driver 64 pushes the docking push plate 63 to move towards the docking plate 62.

[0061] Furthermore, in this embodiment, the axis of the positioning conical hole 41a, the symmetry planes of the two side walls of the positioning groove 30, and the axis of the docking conical hole 62a are coplanar. The second linear actuator 64 has the same structure as the first linear actuator 43.

[0062] In summary, the positioning device for aligning space frame members and hollow spheres provided in this embodiment includes a mounting base 10, a placement frame 20, a positioning groove 30, a centering clamp 40, a positioning link assembly 50, and a docking clamp 60. The placement frame 20 is slidably mounted on the mounting base 10. The positioning groove 30 is mounted on the top of the placement frame 20, its height is adjustable, and its two side walls are inclined upwards and symmetrically arranged. The centering clamp 40 is located outside one end of the placement frame 20 and is provided with a positioning cone hole 41a. The axis of the positioning cone hole 41a is parallel to the length direction of the positioning groove 30, and its small diameter end faces the placement frame 20. The positioning link assembly 50 is provided with an alignment rod 51, which can be inserted into the positioning cone hole 41a. After clamping the space frame member, the alignment rod 51 is coaxial with the space frame member. The docking clamp 60 includes a docking base 61, a docking plate 62, a docking push plate 63, and a second linear actuator 64. At the same time, the hollow sphere can be pressed into the docking cone hole 62a by the docking push plate 63.

[0063] In use, the space frame members to be welded are placed in the positioning groove 30. Due to the inclined and symmetrical arrangement of the two side walls of the positioning groove 30, the positioning effect of the symmetrical inclined side walls of the positioning groove 30 can make the axis of the space frame member located on the symmetrical plane of the positioning groove 30 and parallel to the axis of the positioning cone hole 41a. Then, the second connecting rod 54 is pulled up, and the clamping pressure block 57 is connected to the positioning groove 30, so that the clamping pressure block 57 is pressed against the upper side of the space frame member, so that the space frame member is clamped in the positioning groove 30 by the positioning connecting rod assembly 50, making the alignment rod 51 coaxial with the space frame member, and releasing the locking assembly, so that the positioning groove 30 can move up and down.

[0064] After the locking component is released, the placement frame 20 is pushed to move towards the centering clamp 40, so that the alignment rod 51 is inserted into the positioning cone hole 41a. Through the cooperation between the positioning cone hole 41a and the alignment rod 51, the positioning groove 30 slides up and down. After the alignment rod 51 and the positioning cone hole 41a are coaxial, they are held together. At this time, the space frame rod is coaxial with the positioning cone hole 41a, so the locking component locks the connecting slide rod 31 to fix the height of the positioning groove 30 and keep the space frame rod and the positioning cone hole 41a coaxial.

[0065] The height of the positioning slot 30 is adjusted so that the placement frame 20 is moved away from the centering fixture 40, causing the alignment rod 51 to move out of the positioning cone hole 41a and releasing the clamping of the positioning link assembly 50 (which is suspended under its own weight on the lower side of the positioning slot 30). This allows the end of the space frame member to be directly aligned with the positioning cone hole 41a. Then, after the hollow ball is placed in the positioning cone hole 41a, the first linear actuator 43 extends, pushing the limiting push plate 42 towards the positioning plate 41 to clamp the hollow ball in the centering fixture 40. The hollow ball is then accommodated through the positioning cone hole 41a. Since the positioning cone hole 41a is conical, the center of the hollow ball is located on the center line of the positioning cone hole 41a, allowing for quick determination of the center position of the hollow ball. Since the space frame members are coaxial with the positioning cone holes 41a, the space frame members are coaxial with the hollow spheres. During welding, the placement frame 20 can be moved so that the ends of the space frame members abut against the parts of the hollow spheres that protrude from the positioning cone holes 41a, and then welding can be performed.

[0066] When connecting the next hollow sphere, place it into the docking cone hole 62a, and then use the second linear drive to move the docking push plate 63 towards the docking plate 62 (at this time, the docking base 61 is locked) to clamp the next hollow sphere in the docking cone hole 62a. Since the docking cone hole 62a is conical and coaxial with the positioning cone hole 41a, the center of the next hollow sphere is coaxial with the space frame member. Then, move the docking base 61 so that the part of the next hollow sphere protruding from the docking cone hole 62a abuts against the other end of the space frame member for welding, completing the connection of the two hollow spheres. After welding, retract the first linear drive 43 and the second linear drive 64, and move the docking base 61 in the direction of the positioning plate 41 so that the two hollow spheres can move out of the corresponding cone holes, and then the connected component can be removed upwards.

[0067] In summary, the positioning device provided in this embodiment for aligning space frame members and hollow spheres can quickly determine the center position of the hollow sphere and place the space frame member on the diameter extension line of the hollow sphere, so that the welding of the space frame member and the hollow sphere has sufficient coaxiality, thereby improving the coaxiality of the space frame member and the hollow sphere and ensuring the structural safety and engineering quality of the space frame.

[0068] Example 2

[0069] This embodiment provides a method for replacing a dynamic simulation cabin of a space frame structure, using the positioning device for aligning space frame members and hollow spheres described in Embodiment 1, and includes the following steps:

[0070] S10. Place the space frame member in the positioning groove 30 so that the axis of the space frame member is located on the center line of the positioning groove 30.

[0071] Specifically, the space frame members to be welded are placed in the positioning groove 30. Since the two side walls of the positioning groove 30 are inclined and symmetrically arranged, the positioning effect of the two side walls of the positioning groove 30 can make the axis of the space frame members lie on the symmetry plane of the positioning groove 30 and parallel to the axis of the positioning cone hole 41a.

[0072] S20. The space frame members are clamped in the positioning groove 30 by the positioning link assembly 50, so that the alignment rod 51 is coaxial with the space frame members.

[0073] Specifically, the second connecting rod 54 is pulled up, and the clamping block 57 is connected to the positioning groove 30, so that the clamping block 57 presses against the upper side of the space frame member, so that the space frame member is clamped in the positioning groove 30 through the positioning connecting rod assembly 50, so that the alignment rod 51 is coaxial with the space frame member, and the locking assembly is released, so that the positioning groove 30 can move up and down.

[0074] S30. Move the placement frame 20 toward the centering fixture 40 and insert the alignment rod 51 into the positioning cone hole 41a so that the alignment rod 51 is coaxial with the positioning cone hole 41a.

[0075] Specifically, after the locking component is released, the placement frame 20 is pushed to move towards the centering clamp 40, so that the alignment rod 51 is inserted into the positioning cone hole 41a. Through the cooperation between the positioning cone hole 41a and the alignment rod 51, the positioning groove 30 slides up and down. After the alignment rod 51 and the positioning cone hole 41a are coaxial, they are held together. At this time, the space frame rod is coaxial with the positioning cone hole 41a, so the locking component locks the connecting slide rod 31 to fix the height of the positioning groove 30 and keep the space frame rod and the positioning cone hole 41a coaxial.

[0076] S40. Move the placement frame 20 back, and after moving the alignment rod 51 out of the positioning cone hole 41a, release the clamping of the positioning link assembly 50.

[0077] Specifically, the height of the positioning slot 30 is adjusted so that the placement frame 20 is moved away from the centering clamp 40, causing the alignment rod 51 to move out of the positioning cone hole 41a and releasing the clamping of the positioning link assembly 50, so that the end of the space frame rod can be directly aligned with the positioning cone hole 41a.

[0078] S50. Place the hollow ball into the centering fixture 40, so that the hollow ball at least partially protrudes from the small-diameter end of the positioning cone hole 41a.

[0079] Specifically, after the hollow sphere is placed in the positioning cone hole 41a, the first linear actuator 43 extends, pushing the limiting push plate 42 towards the positioning plate 41 to clamp the hollow sphere within the centering fixture 40. The hollow sphere is then accommodated through the positioning cone hole 41a. Since the positioning cone hole 41a is conical, the center of the hollow sphere is located on the center line of the positioning cone hole 41a, allowing for quick determination of the hollow sphere's center position. The space frame member is coaxial with the positioning cone hole 41a. Therefore, at this time, the space frame member and the hollow sphere are coaxial. During welding, the placement frame 20 is moved so that the end of the space frame member abuts against the portion of the hollow sphere protruding from the positioning cone hole 41a, allowing for welding.

[0080] For cases where it is necessary to connect to the next hollow sphere:

[0081] The next hollow sphere is placed in the docking cone hole 62a. Then, the second linear drive pushes the docking push plate 63 towards the docking plate 62 to clamp the next hollow sphere in the docking cone hole 62a. Since the docking cone hole 62a is conical and coaxial with the positioning cone hole 41a, the center of the next hollow sphere is coaxial with the space frame member. Then, the docking base 61 is moved so that the part of the next hollow sphere protruding from the docking cone hole 62a abuts against the other end of the space frame member for welding, completing the connection of the two hollow spheres. After welding, the first linear drive 43 and the second linear drive 64 are retracted, and the docking base 61 is moved in the direction of the positioning plate 41 so that the two hollow spheres can be moved out of the corresponding cone holes. The connected component can then be removed upwards.

[0082] In summary, the method for aligning space frame members and hollow spheres provided in this embodiment is based on the positioning device for aligning space frame members and hollow spheres described in Embodiment 1. First, the space frame member is placed in the positioning groove 30, ensuring the axis of the space frame member is located on the centerline of the positioning groove 30. Then, the space frame member is clamped in the positioning groove 30 by the positioning connecting rod assembly 50, ensuring the alignment rod 51 is coaxial with the space frame member. Next, the placement frame 20 is moved towards the centering clamp 40, and the alignment rod 51 is inserted into the positioning cone hole 41a, aligning the alignment rod 51 with the positioning cone. After the positioning rod 51 of the placement frame 20 is moved out of the positioning cone hole 41a, the clamping of the positioning link assembly 50 is released. Finally, the hollow ball is placed into the centering fixture 40 so that the hollow ball at least partially protrudes from the small diameter end of the positioning cone hole 41a. This allows the center position of the hollow ball to be quickly determined, and the space frame member is placed on the diameter extension line of the hollow ball so that the space frame member and the hollow ball have sufficient coaxiality when welded. This improves the coaxiality between the space frame member and the hollow ball, ensuring the structural safety and engineering quality of the space frame.

[0083] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A positioning device for aligning space frame members with hollow spheres, characterized in that, include: Mounting base (10); The placement rack (20) is slidably mounted on the mounting base (10) and can slide along the length direction of the mounting base (10); The positioning groove (30) is installed on the top of the placement frame (20), extends along the length of the placement frame (20), has an adjustable height, and has an upward-facing opening. The two side walls are inclined upward and symmetrically arranged to accommodate the space frame members. A centering clamp (40) is installed on the mounting base (10) and located outside one end of the placement frame (20). It is provided with a positioning cone hole (41a). The axis of the positioning cone hole (41a) is parallel to the length direction of the positioning groove (30). The positioning cone hole (41a) is used to accommodate a hollow ball, and the small diameter end of the positioning cone hole (41a) is facing the placement frame (20). The positioning link assembly (50) is provided with an alignment rod (51) which can clamp the space frame rod in the positioning groove (30). After clamping the space frame rod, the alignment rod (51) is coaxial with the space frame rod and can be inserted into the positioning cone hole (41a). When the hollow ball is held in the positioning cone hole (41a), at least part of it can protrude from the small diameter end of the positioning cone hole (41a) and be coaxial with the positioning cone hole (41a) after the alignment rod (51) is inserted into the positioning cone hole (41a).

2. The positioning device for aligning space frame members and hollow spheres according to claim 1, characterized in that, The mounting base (10) is provided with a movable slide rail (11), which extends along the length of the mounting base (10); The bottom of the placement rack (20) is provided with a connecting slide (21), which is slidably engaged with the movable slide rail (11).

3. The positioning device for aligning space frame members and hollow spheres according to claim 2, characterized in that, The bottom of the positioning groove (30) is connected to at least one vertically arranged connecting slide rod (31), and the lower end of the connecting slide rod (31) is slidably inserted into the connecting slide block (21); The connecting slide (21) is provided with a locking component, which can lock the connecting slide (31) inside the connecting slide (21).

4. The positioning device for aligning space frame members and hollow spheres according to claim 3, characterized in that, The locking component includes: A locking screw (22) is screwed to the connecting slide (21), and one end of the screw can extend into the mounting hole of the connecting slide (21) that accommodates the connecting slide (31); The locking handle (23) is fixedly connected at one end to the other end of the locking screw (22); The locking handle (23) drives the locking screw (22) to rotate, which can drive the end of the locking screw (22) to abut against the connecting slide (31).

5. The positioning device for aligning space frame members and hollow spheres according to claim 3, characterized in that, The centering fixture (40) includes: The positioning plate (41) is vertically fixed on the mounting base (10), and the positioning cone hole (41a) is provided on the positioning plate (41); The limiting push plate (42) is vertically installed on the mounting base (10), facing the large diameter end of the positioning cone hole (41a), and can move along the length direction of the mounting base (10); The first linear actuator (43) is mounted on the mounting base (10) and is connected to the limiting push plate (42) in a transmission manner; When the first linear actuator (43) pushes the limiting push plate (42) to move toward the positioning plate (41), the hollow ball can be pressed into the positioning cone hole (41a) by the limiting push plate (42).

6. The positioning device for aligning space frame members and hollow spheres according to claim 5, characterized in that, The top of the positioning plate (41) is provided with a first ejection groove (41b), which is connected to the positioning cone hole (41a) and allows the space frame members to pass through.

7. The positioning device for aligning space frame members and hollow spheres according to claim 6, characterized in that, The positioning link assembly (50) includes: Connecting slide (21); The first connecting rod (53) is hinged at one end to the bottom of the positioning groove (30) and at the other end to the connecting slide (21); The second link (54) is hinged at one end to the connecting slide (21); The clamping block (57) is hinged to the other end of the second connecting rod (54); The third link (55) is hinged at one end to the middle of the first link (53); The fourth link (56) is hinged at one end to the middle of the second link (54) and at the other end to the other end of the third link (55); The middle part of the alignment rod (51) is slidably connected to the connecting slide (21), and one end is hinged to the end of the third link (55) away from the first link (53). The first link (53), the second link (54), the third link (55) and the fourth link (56) form a parallelogram link mechanism and are coplanar with the symmetrical planes of the two side walls of the positioning groove (30). In the clamping state, the first link (53) and the second link (54) are symmetrical about the axis of the space frame member.

8. The positioning device for aligning space frame members and hollow spheres according to claim 7, characterized in that, The clamping block (57) is connected to the positioning groove (30) by bolts.

9. The positioning device for aligning space frame members and hollow spheres according to claim 7, characterized in that, It also includes a docking fixture (60), which comprises: A docking base (61) is mounted on the mounting base (10), and its position in the longitudinal direction of the mounting base (10) is variable; The docking plate (62) is vertically fixed on the docking base (61) and located on the side of the placement frame (20) away from the centering fixture (40). It is provided with a docking cone hole (62a) and a second ejection groove (62b). The docking cone hole (62a) is used to accommodate a hollow ball and is coaxial with the positioning cone hole (41a). The small diameter end of the docking cone hole (62a) is directly opposite the placement frame (20). The second ejection groove (62b) is connected to the docking cone hole (62a) and can allow the space frame members to pass through. The docking push plate (63) is vertically mounted on the docking base (61), facing the large diameter end of the docking cone hole (62a), and can move along the length direction of the docking base (61). The second linear actuator (64) is mounted on the docking base (61) and is connected to the docking push plate (63) in a transmission manner; When the first linear actuator pushes the docking pusher (63) toward the docking plate (62), the hollow ball can be pressed into the docking cone hole (62a) by the docking pusher (63).

10. A method for aligning a space frame member with a hollow sphere, characterized in that, The positioning device for aligning space frame members and hollow spheres according to any one of claims 1 to 9 includes the following steps: S10. Place the space frame member in the positioning groove (30) so that the axis of the space frame member is located on the center line of the positioning groove (30); S20. The space frame members are clamped in the positioning groove (30) by the positioning link assembly (50) so that the alignment rod (51) is coaxial with the space frame members; S30. Move the placement frame (20) toward the centering fixture (40) and insert the alignment rod (51) into the positioning cone hole (41a) so that the alignment rod (51) and the positioning cone hole (41a) are coaxial. S40, move the placement frame (20) back, move the alignment rod (51) out of the positioning cone hole (41a), and release the clamping of the positioning link assembly (50); S50. Place the hollow ball into the centering fixture (40) so that the hollow ball at least partially protrudes from the small diameter end of the positioning cone hole (41a).

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